Home / 12,606.84-17,393.94-8,130.78

Finding the Fourth Proportional to 12,606.84, 17,393.94 and 8,130.78

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Solution

The fourth proportional to 12,606.84, 17,393.94 and 8,130.78 is: 11,218.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.84 : 17,393.94 = 8,130.78 : x
  2. Step 2: Convert to fraction form
    12,606.84/17,393.94 = 8,130.78/x
  3. Step 3: Cross multiply
    12,606.84x = 17,393.94 × 8,130.78
  4. Step 4: Simplify right side
    12,606.84x = 141,426,299.47
  5. Step 5: Solve for x
    x = 141,426,299.47/12,606.84
  6. Step 6: Final answer
    x = 11,218.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.